I have a 1953 Chevy Truck with a 216 6v system. I hadn't started my truck in several months. I put the battery on the charger. When it was 50% charged and still on the charger it started right up. I drove it around the block, parked it and turned it off. I came out the next day and turned the key and nothing happened. I figured the battery was dead again. I put the battery on the charger and left it over night. I came out this morning, the battery was 75% charged, and tried to start it and nothing. I just had the starter rebuilt and put in a new solenoid this last fall. I am trying to figure out what to try next. I am guessing either a loose wire or the ignition went out? How do I go through a process methodically to figure out what is wrong?
I don't know much about mechanics so please explain it to me like I am a 5 grader. thanks in advance.